The researchers then put mice injected with ghrelin and control mice through a maze and other intelligence tests. In each case, the biochemically âhungryâ mice â mice infused with ghrelin â performed notably better than those with normal levels of the hormone. The finding was startling, but âit makes sense,â Horvath says. âWhen you are hungry, you need to focus your entire system on finding food in the environment.â In fact, some biologists believe that human intelligence itself evolved because it made early hominids more effective hunters, gathers and foragers.
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But if you called the IRS, you'd discover that it was a scam. When in doubt, just call the real IRS at 1-800-829-1040. Then report the incident to the Treasury Department at 1-800-366-4484. One thing we are telling people is to try and recognize these scams up front so you don't fall into a trap, Hanson told me.